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 Function

     (procedure and function) An executable block of code with an assigned
     name.  Alternately, the collection of source code statements that define
     a function.  Certain functions are supplied as part of CA-Clipper;
     others are defined by the programmer using the FUNCTION or PROCEDURE
     declaration statements.  The latter are referred to as user-defined
     functions.

     The terms procedure and function are generally interchangeable.  By
     convention, a function returns a value, while a procedure does not.